package cellularautomaton;

import java.io.File;
import java.io.FileNotFoundException;
import java.io.IOException;

/**
 * Creates a string of images labelled 0.png, 1.png, 2.png, etc in a specified
 * directory. Use in conjuction with <code>AnimatedGifEncoder</code>.
 * @author George Miller
 */

public class CreateStringOfImages
{
    public void wireWorld(int numberOfGenerations, String firstGeneration,
                             String storageDirectory) throws FileNotFoundException, 
                             IOException
    {
        //See if the firstGeneration file exists
        File fileTest = new File(firstGeneration);
        if(fileTest.isFile() == false)
            throw new FileNotFoundException(firstGeneration + " does not exist");
        
        //Create new directory if necessary
        File dirFile = new File(storageDirectory);
        if(dirFile.isDirectory() == false)
        {
            boolean dirTest = dirFile.mkdir();
            if(dirTest == false)
                throw new IOException("Cannot create directory " + storageDirectory);
        } //End of create directory
        
        //Store the image representing the first generation
        ImageHolder gen = new ImageHolder(firstGeneration);
        gen.save(storageDirectory + "0.png", "png");
        
        //Create the image string        
        int next;
        Automaton_WireWorld wireCheck = new Automaton_WireWorld();
        
        for(int i=0; i<=numberOfGenerations; i++)
        {
            System.out.println("Writing generation " + i + " out of " + numberOfGenerations +
                               ", type: WireWorld");
            next = i + 1;
            wireCheck.saveNextGeneration(storageDirectory + i + ".png",
                                         storageDirectory + next + ".png");
        } //End of generation create
    }
    
    public void wireWorldColorChange(int numberOfGenerations, String firstGeneration,
                                     String storageDirectory, ColorPair [] colors)
                                     throws FileNotFoundException, IOException
    {
        //Create new string
        wireWorld(numberOfGenerations, firstGeneration, storageDirectory);
        
        //Perform color change on that folder
        ColorChange change = new ColorChange();
        change.changeFolder(colors, storageDirectory);
    }
}